I remember Groovy didn't allow ? on indexes like in the third C# example: int? count = customers?[0]?.Orders?.Count(); I remember asking for it but it never

I remember Groovy didn't allow ? on indexes like in the third C# example: int? count = customers?[0]?.Orders?.Count(); I remember asking for it but it never came. I don't think Ruby's proposed .? syntax would work with indexes either unless they use [? ]. Neither Java nor Groovy has the int? declaration shown which enforces the optionality. The C# version looks more versatile. Back when Groovy was more popular, its backers also discussed a cascading ? on their mailing list but it never happened. If C# had cascading ? then the example above would be int? count = customers?[0].Orders.Count(); because the first ? would ripple to the subsequent member accesses and index lookups.